按照最小存活种群的标准，该园有73种稀有濒危植物迁地保护有效。
According to standard of minimum viable population, the ex-situ conservation of 73 rare and endangered plants are effective.
在分析稀有植物濒危原因和本省保护区建设情况的基础上，提出了保护稀有濒危植物资源的建议。
Some proposals for protecting the resources of these plants are presented on the base of analysing the endangered causes and constructional conditions of natural protection area in this province.
表明人类干扰是长江流域植物受威胁的主要原因，保护森林成为保护长江流域稀有濒危植物的主要途径。
These showed that human activities were the main factor threatening the survival of plants, and preserving forests were the effective approach to save the rare and endangered plants in the valley.
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